MC68K's on DEUNA's

Paul Koning paulkoning at
Sun Mar 26 15:02:51 CDT 2017

> On Mar 26, 2017, at 3:58 PM, Noel Chiappa via cctalk <cctalk at> wrote:
>> From: Bill Gunshannon
>> I doubt Motorolla was in the business of custom making different size
>> chips, even for DEC.
> So, that triggered a question in my mind: why was DEC using the 68K on this
> board, anyway? They had plenty of in-house chips the could have used, e.g.
> the J11. The MC68000 had only a 16-bit bus, so it's not that dissimilar in
> capabilities. Why buy out? Did Motorola offer them a price they couldn't
> resist, or what?

J-11 may have been later.  Also, until fairly late, the DEC in-house semiconductor group charged extremely high prices for its chips.  I remember the first couple of internal Ethernet MACs were thoroughly uncompetitive with LANCE for that reason; some vague memory says this was finally fixed in the third generation ("TGEC").


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